6533b7dafe1ef96bd126ef4f

RESEARCH PRODUCT

Spectroscopy of 161Hf from low to high spin

P. J. R. MasonJ. SimpsonE. S. PaulM. A. RileyKalle AuranenHussam BadranJ. S. BaronA. J. BostonT. Davis-merryTuomas GrahnPaul GreenleesAndrej HerzanUlrika JakobssonD. T. JossRauno JulinSakari JuutinenJoonas KonkiMatti LeinoC. McpeakeS. L. MillerG. O'neillJanne PakarinenPhilippos PapadakisJari PartanenPauli PeuraPanu RahkilaPanu RuotsalainenMikael SandzeliusJan SarénCatherine ScholeyJ. F. Sharpey-schaferL. SinclairJuha SorriSanna StolzeJuha UusitaloK. VillafaniF. WearingJ. P. Wrigh

subject

spektroskopianeutron-deficient nuclei

description

Excited states in the neutron-deficient nucleus 161 72Hf89 have been populated using the 118Sn(48Ti,5n) 161Hf and 110Pd(56Fe,5n) 161Hf fusion-evaporation reactions at 240 and 270 MeV, respectively. The level scheme for 161Hf has been extended with the observation of new band structures and an I π = (13/2+) isomeric state with a half-life of 4.8(2) μs has been identified. The decay path from this isomer to the (7/2−) ground state is established. The yrast band, based on the (13/2+) isomeric state, is extended up to (73/2+) and side band structures are identified up to (69/2−) and (55/2−). Quasiparticle assignments for these rotational structures are made on the basis of their alignment properties and Woods-Saxon cranked shell-model calculations. peerReviewed

yearjournalcountryeditionlanguage
2014-01-01
http://urn.fi/URN:NBN:fi:jyu-201602021393